Quick answers
- Does Janna Oganessian accept Medicare assignment?
- Yes. Medicare's clinician data says Janna Oganessian accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Janna Oganessian see?
- In 2024, CMS data shows 242 Original Medicare patients and 3,891 services for Janna Oganessian. This counts Original Medicare only and measures volume, not quality.
- What is Janna Oganessian's NPI number?
- 1801820832. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Janna Oganessian, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 242 |
|---|---|
| Services billed to Medicare | 3,891 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)1,830 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)710 services
- Insertion of needle into vein for collection of blood sample (36415)613 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)177 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)152 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis75%
- Anxiety75%
- Depression68%
- Ischemic heart disease59%
Practice locations
Addresses where Janna Oganessian is enrolled with Medicare (CMS data updated October 2, 2026).
- 13739 Riverside Dr, Suite BSherman Oaks, CA 91423 (818) 385‑0001
- 13739 Riverside Dr BSherman Oaks, CA 91423
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Sherman Oaks
Clinicians with the same Medicare primary specialty in Sherman Oaks, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1974 (52 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801820832 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians